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Fracturing fluid additive with emulsion breaking capability

A technology of fracturing fluids and additives, applied in the direction of drilling compositions, chemical instruments and methods, etc.

Inactive Publication Date: 2011-06-15
武侯区巅峰机电科技研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Based on the above requirements, if only the existing fracturing fluid is used, it is difficult to fully meet the requirements. Therefore, additives that can meet the requirements must be added to the existing fracturing fluid

Method used

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Embodiment Construction

[0030] The present invention will be further described below.

[0031] The fracturing fluid additive with demulsibility is characterized in that it includes emulsifier, thickener, crosslinking agent, fluid loss control agent, gel breaker, drainage aid, clay stabilizer, demulsifier, and its mass ratio is 6:4:3:50:1~3:1~1.5:30:4.5.

[0032] The emulsifier is a mixed emulsifier consisting of OP-10 and Span80 in a mass ratio of 10:90. Since the emulsification stability of the emulsifier OP-10 is far from the requirements of the oil and gas industry standard SY / T6376-2008 "General Technical Conditions for Fracturing Fluids" for the emulsified fracturing fluid stability time ≥ 6h, the OP-10 and Span80 Mix to become the new emulsifier. The HLB of the emulsifier mixed according to the mass ratio of OP-10 and Span80 is 10:90 is about 11.4. The interaction between the mixed emulsifier molecules makes the molecules in the interface film more tightly arranged, and the formed film has a ...

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Abstract

The invention discloses a fracturing fluid additive with emulsion breaking capability, which belongs to a fracturing fluid technology and mainly solves the problem that the conventional fracturing fluid cannot meet the environmental requirements easily. The fracturing fluid additive with emulsion breaking capability is characterized by comprising the following components in percentage by mass: 6 percent of emulsifying agent, 4 percent of thickening agent, 3 percent of cross linking agent, 50 percent of fluid loss additive, 1-3 percent of gel breaker, 1-1.5 percent of cleanup additive, 30 percent of clay stabilizer and 4.5 percent of emulsion splitter. The using effect of the fracturing fluid can be enhanced to a great extent, complete gel breaking is achieved by the fracturing fluid, and bonding capability is enhanced.

Description

technical field [0001] The invention relates to an additive, in particular to a fracturing fluid additive with demulsibility. Background technique [0002] Fracturing fluid (fracturing fluid) is the working fluid in the process of hydraulic fracturing and reconstruction of oil and gas reservoirs, which plays the role of transmitting pressure, forming and extending fractures, and carrying proppant. Fracturing fluid and its performance are important factors affecting the success or failure of fracturing, especially for large-scale fracturing. The fracturing fluid and its properties are closely related to whether a sand-filled fracture with sufficient size and sufficient conductivity can be created. Fracturing fluid accounts for 1 / 2 or more of the various costs of fracturing construction, and using fracturing fluid with appropriate performance is also an important way to improve the economic benefits of fracturing. [0003] Fracturing fluid is a general term. According to the...

Claims

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Application Information

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IPC IPC(8): C09K8/88
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心
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